Tour Los Túneles – Isabela Island’s Underwater Wonderland
Los Túneles tour is widely regarded as one of the most extraordinary snorkeling experiences in the entire Galápagos archipelago. Located on the southwestern coast of Isabela Island, Los Túneles (also called Cabo Rosa) is a surreal network of lava bridges, volcanic arches, and open-water tunnels that emerged from ancient lava flows meeting the sea. The result is a labyrinth of crystalline channels teeming with marine life found nowhere else on Earth.
What Makes Los Túneles So Special?
Unlike any other snorkeling site in the Galápagos, Los Túneles combines above-water exploration of dramatic lava formations with underwater encounters in calm, shallow channels. The turquoise water inside the tunnels is so clear you can see every detail of the volcanic rock beneath your fins. Seahorses cling to mangrove roots — the Galápagos is one of only a handful of places in the world where you can reliably find wild seahorses in the open ocean. Blue-footed Boobies nest on the lava platforms just meters from where you snorkel, diving dramatically into the water around you.
Wildlife You’ll Encounter at Los Túneles
- Galápagos seahorses — clinging to mangroves in the shallow channels
- White-tip reef sharks — resting in the sandy shallows beneath the arches
- Pacific green sea turtles — grazing and swimming through the tunnels
- Eagle rays — gliding silently through the open-water channels
- Marine iguanas — basking on the black lava formations
- Blue-footed Boobies — nesting and diving just above the water
- Galápagos penguins — occasionally sighted along the rocky shoreline
- Flightless cormorants — unique to western Isabela, drying their wings on the lava
Tour Itinerary
The tour departs from Puerto Villamil pier and travels approximately 45–60 minutes by panga (motorized dinghy) along Isabela’s dramatic coastline. En route, your certified naturalist guide will point out marine wildlife, including possible sightings of manta rays and dolphins at the surface.
On arrival at Los Túneles, you’ll have approximately 2–3 hours to explore the site: snorkeling through the volcanic channels, walking over the lava bridges, and observing the nesting birds. Your guide will lead you to the best spots for seahorse sightings and help you navigate the tunnel system safely. The return journey follows the same route back to Puerto Villamil.
What’s Included
- Round-trip panga transport from Puerto Villamil
- Certified bilingual naturalist guide (Galápagos National Park certified)
- Snorkeling equipment (mask, fins, wetsuit)
- Life jackets
- Drinking water and snack
- Galápagos National Park entrance fees
Practical Information
Duration: Approximately 5–6 hours total.
Departures: 07:00 AM and 01:00 PM daily from Puerto Villamil pier.
Difficulty: Moderate — basic swimming ability required. No diving certification needed.
Best season: Year-round. June–November offers cooler, clearer water with richer marine life.
Frequently Asked Questions
Can beginners snorkel at Los Túneles?
Yes — the tunnels have calm, sheltered water ideal for beginners. Wetsuits are provided and the water temperature is comfortable year-round (20–26°C). Basic swimming ability is sufficient.
Will I definitely see seahorses?
Los Túneles is one of the most reliable places in the world to spot wild seahorses. Sightings are very common, though wildlife encounters are always subject to natural conditions. Your guide knows exactly where to look.
How do I get to Puerto Villamil from Santa Cruz?
The speed boat from Puerto Ayora (Santa Cruz) to Isabela takes approximately 2 hours. Galaapp can arrange ferry tickets as part of your Isabela package.
